Electric Motor Control
10th Edition
ISBN: 9781305177611
Author: Herman
Publisher: Cengage
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Question
Chapter 53, Problem 1SQ
To determine
Explain the reason for the usage of gear motors in many industrial machines, instead of low rpm induction motors.
Expert Solution & Answer
Explanation of Solution
Discussion:
The reasons for the usage of gear motors in many industrial machines instead of low rpm induction motors are as follows:
- The gear motor is a machine which provides a direct power drive from a single unit and it is a speed reducing machine.
- The gear motors are extremely small size and provide efficient power drive. The low-speed induction motors are heavy, large in size, and very expensive for the same horse power as gear motors.
- The gear motors are available in different types of standard motors. For example, the gear motors are available as slip-ring induction motors and squirrel-cage induction motors.
- The gear motors have numerous applications in the field of industrial machines over the low rpm induction motors.
Conclusion:
Thus, the reason for the usage of gear motors in many industrial machines instead of low rpm induction motors is explained.
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Chapter 53 Solutions
Electric Motor Control
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- a) Why do we use asynchronous word for asynchronous (induction) motors? b) How are the three-phase windings placed in the stator of induction motors from the point of magnetic field axis? c) What is the purpose of the winding ends taken to the outside in the wound-rotor induction motors? d) In the cage structure rotors, in which mechanism are the bar conductors short-circuited? Please answer all. Just two to three lines of answer for each is enougharrow_forwardIn induction motors What is the difference between nominal, rated , nominal conditions,free shaft conditions, rated conditions ?arrow_forwardCan single phase induction motor be self-started? Explain the operation of a capacitor run single phase induction motor?arrow_forward
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